<p> Supplementary methods</p><p>Semi-structured Interview Schedule for recruitment and creating the behaviour diary</p><p>(Telephone)</p><p>Temper outburst/tantrum –</p><p>Highly emotional response. Period of crying, screaming, angry ranting, shouting, stamping feet, or kicking. Can last for a prolonged period of time.</p><p>1. Does ______ever display temper outburst behaviour?</p><p>2. If so, what behaviours does ______show during a typical episode?</p><p>3. How often do the temper outbursts occur?</p><p>4. Think about the last time a temper outburst occurred, what seemed to trigger the behaviour in this example?</p><p>5. In the example you thought about, how did you respond to the temper outburst?</p><p>6. Roughly, how many times does the trigger you mentioned actually result in a temper outburst?</p><p>7. Are there times when this particular trigger does not actually trigger a temper outburst?</p><p>8. Roughly, how many times after a temper outburst would you respond in the way that you mentioned in the example?</p><p>9. What behaviours does ______typically show after an outburst?</p><p>10. Think of other examples in which a temper outburst occurred, what seemed to trigger this and how did you respond?</p><p>11. How long roughly do the temper outbursts last for?</p><p>Review</p><p>12. Finally go over behaviours, antecedents and consequences listed. Anymore behaviours, antecedents, consequences?</p><p>Can these antecedents and consequences be categorised? Do this with parent/carer.</p><p>1 Example of a behaviour diary report card</p><p>Date Time Behaviour Observed Intensity Before After Duration 1-10</p><p> Shouted  Change to routine  Cried  Kicked  Change to expectation  Said sorry repeatedly  Spat at someone  Somebody told him off  Blamed somebody else  Red Face  Somebody told him off about  Wanted a cuddle  Stamped feet food  Tired  Other______ Did not get some food he  Other wanted ______ Other______</p><p>2 Self-report negative emotional experience sheet</p><p>Date: 1. How bad did you feel? Time:</p><p>Colour up to a point on the thermometer or mark a point</p><p>Terrible Extremely angry, worried, annoyed or upset</p><p>Very bad Very angry, worried, annoyed or upset</p><p>Quite bad Angry, worried, annoyed or upset</p><p>A little bad A little angry, worried, annoyed or upset</p><p>OK I didn’t feel bad at all</p><p>3</p>